he has to be able to work in different environments and have the drive. >> they look like german shepherds but they're not, correct? >> correct. this is a belgian. they're very similar. dutch shepherd german shepherd and this one. >> i remember the raids carried out on osama bin laden's compound that we learned about a mall inroy. his name was cairo, is that correct? >> that's correct. >> that's the first time i got the sense that wow, these are dogs with elite units. >> absolutely it's something that has. been -- >> what do they do? why is it so critical to have a dog? >> the primary thing for them is bomb detection. to have the ability for a dog to be able to move out in front is priceless. >> and i kept -- when did this start happening? did somebody say let's bring a dog and somebody said that's not a good idea or did somebody say, that is a good idea? >> dogs have been used since man existed but special operations started using them in vietnam and then after that the programs were largely disbanded and after 9/11 it was decided shortly thereafter we need to start using dogs again. >> m